Ok i have followed this thread and tried a few options. Now i have a retina macbook pro 2.3ghz 16gb ram with the 650m graphic card.. I have succesfully overclocked it with nvidia inspector using the command promp followin the OP advice of using force state 02 instead of 01. The maximum stable OC i can get without the computer shutting down or getting artifacts is 1100/2500 as someone else mentioned... Any higher than this and the computer shuts down to a black screen after about 5 seconds. Wether this is driver related or not i dont know. Nvidia inspector is also very tricks. It seems for all the people that cant seem to OC even using the command promp... Myself also having the issue. I set it manuall through the drop down box to P5 or P2 first. Done the command promp code and then hit unlock max on the Inspector at the top. I was then able to slide the toggles to 1100 and 2500 and clicking apply without it droping the toggles back down to the default. My first original 3Dmark11 score was around 2300 i think roughly. With the OC running monitoring with core temp and lubbos running at the full 6000rpm on both fans to be safe im hitting 3006 on 3d mark 11 Also a note to anyone that cant get Lubbos running showing the correct cpu temp. On your Lubbos download files open up the fan controll text file and change CPUkey=TC0D to CPUkey=TC0F make sure its a capital F save and restart the Lubbos program... Note: you need to change that everytime you reset defaults and restart the program. My cpu temp has hit 95 degrees when playing CPU intensive games such as ARMA 2 and hits around 30FPS at 1920 1080 on full highest settings . Im not here to post up frame rates. Just hoping i could put my input in that. It is possible but it is tricky.